第八章 The Industrial Revolution 工业革命
书迷正在阅读：神级扮演：从小丑开始、地下城之主、全球天选：开局觉醒百倍经验天赋、妖魔入侵：我成救世大剑仙、名侦探柯南续集、火影：等会，我先戴个写轮眼、神奇宝贝之无尽轮回、这个世界的穿越者有点多、异界游戏王之虚空变、潜伏火箭队，只为超梦
e and boiler to be combined into a single unit compact enough to be used on mobile road and rail locomotives and steam boats. ??In the early 19th century after the expiration of Watt’s patent， the steam engine underwent many improvements by a host of inventors and engineers. ??2、Railways铁路 ??Wagonways for moving coal in the mining areas had started in the 17th century and were often associated with canal or river systems for the further movement of coal. These were all horse drawn or relied on gravity， with a stationary steam engine to haul the wagons back to the top of the incline. The first applications of the steam locomotive were on wagon or plate ways. Horse–drawn pu